Trail clearing equipment

What is the best way to clear green briars, blueberry scrub, and thin laurel off of rocky trails. I have never tried a rotary blade but it seems like it would not take long to get ruined on the rocks. I usually use the triangle golf club type wacker which works ok, but I was wondering if there was something better. I have seen signs of someone using a beefed up rotary weed wacker with a twisted red licorice type whip. The results looked good but I did not see it in use. Has anyone used something like that?

...these heads can take rock shots cause they are mounted in a clutch type set up allowing the blade to rotate if it connects a rock, it will still nick it, but using a saw blade requires resharpening alot.

I wear welders heavy leather gloves to clean up debris.

...and if it's multi flora rose it will come back unless you remove everything including the dirt it is in.

I use a Stihl long handled hedgetrimmer. Little heavy for an entire day of use but nothing takes care of greenbriar like it.

I also have a Ryobi long handled 24 v hedgetrimmer for trails i have a long hike to get to. Does adarned good job and much lighter and much cheaper( about $100 or so compared to over $500 for the Stihl). With an extra battery will work well over an hour .